import http from 'http';

import fs from 'fs/promises';
import url from 'url';
import path from 'path';
import path from 'path';

const _filename = url.fileURLToPath(import.meta.url);
const _dirmare = path.dirname(_filename);

const PORT=process.env.PORT;

const server = http.createServer
(async (req,res) => {

    try{
        if(req.method === 'GET'){
            let filePath;
   if(req.url === '/'){
   filePath = path.join(_dirmare,'public','index.html');
   }else if(req.url === '/about'){
    filePath = path.join(_dirmare,'public','about.html');
   }else{
  res.writeHead(404,{'Content-Type':'text/html:charset=utf-8'});
  res.end('<h1>页面未找到</h1>');
  return;
    }
    const data = await fs.readFile(filePath);
    res.setHeader('Content-Type','text/html;charset=utf-8');
    res.writeHead(200);
    res.end(data);
    } else {
        res.writeHead(400,{'Content-Type':'text/html;charset=utf-8'});
        res.end('<h1>非法请求</h1>');
    }
} catch (error){
    console.log(error);
    res.writeHead(500,{'Content-Type':'text/html;charset=utf-8'});
    res.end('<h1>服务器错误</h1>');
}

});

server.listen(PORT,()=>{
    console.log("服务器已启动，监听端口${PORT}");
});